The radioactivation of linear accelerator components for radiation therapy is interest for radiation protection in general, and particularly, when decommissioning these structures. The energy spectra of gamma rays emitted from the heads of two accelerator models, EXL-15SP and Clinac iX, after 10-MeV X-ray irradiation, were measured using a high-purity germanium semiconductor survey meter. After...

For radioactive waste disposal, it is important that local groundwater flow slow as the main transport medium for nuclides in geological formations. When very slow, diffusion dominant mechanism (diffusion-dominant domain). Key pieces of evidence indicating a diffusion-dominant domain are separation components and fractionation isotopes by diffusion. To prove this, necessary to investigate diffe...

In the recent years radioecological studies are concentrated on the investigation of restoration possibilities of contaminated ecosystems. These studies are aimed to develop methods for decreasing the bioavailability of the radionuclides released to the environment. Radionuclides of long half-lives, such as 90Sr and 137Cs, are of special importance from the point of human health, since these nu...

Radiation surveillance equipment was mounted in a small unmanned aerial vehicle. The equipment consists of a commercial CsI detector for count rate measurement and a specially designed sampling unit for airborne radioactive particles. Field and flight tests were performed for the CsI detector in the area where (137)Cs fallout from the Chernobyl accident is 23-45 kBq m(-2). A 3-GBq (137)Cs point...

A review is presented of the p-process in Type II supernovae, one of its goals being to enlighten the changes in views on this nucleosynthesis mechanism since the work of Jean and Jim on the subject in 1975. Specific discussions are also devoted to cases of particular interest, like the light Mo and Ru stable isotopes, the rare nuclide 138 La or the radionuclide 146 Sm. Some comments of diverse...

A B S T R A C T Membrane Assisted Liquid Extraction of Actinides and Remediation of Nuclear Waste: A Review N.S. Rathore1, Ana Maria Sastre2, Anil Kumar Pabby1,* * Corresponding author at: Phone: + 91 2525265197, Fax: +91 2525244158 Article history: Received 2014-08-01 Revised 2014-12-05 Accepted 2014-12-10 Available online 2014-12-10 Membrane assisted liquid extraction (MALE) technologies are ...

In 1940s M.G. Mayer discovered that the number of protons and neutrons is 2, 8, 20, 28, 50, 82 and 126 and soon. These kinds of nuclides are stable in a special way. This characteristic is called “the magic number” law. The existence of “the magic number” indicates that the nuclide is characteristic of a shell structure. Afterwards, M.G. Mayer and J.H.D Jensen proposed, with the nuclide indepen...

Relativistic energy-density functional (REDF) theory has been developed and utilized for self-consistent mean-field calculations of atomic nuclei. The proton-emitting radioactivity can provide a suitable reference to improve the predicting ability REDF especially on proton-drip line. One needs consider quantum tunneling effect, which plays an essential role in nucleon-emitting radioactive proce...

Abstract New research technology for partition and transmutation (P-T) of minor actinide (MA) contained in high-level waste (HLW) has been carried out to design accelerator-based system or commonly known as Accelerator Driven Subcritical (ADS) device. The objective this is eliminate minimize radioactive that long half-life develop long-term safety assurance HLW management. Analysis done by usin...